c++: Add lang_decl, type_decl API

c++: Add lang_decl, type_decl API

[Nathan Sidwell]

[-- Attachment #1: Type: text/plain, Size: 365 bytes --]


We need	to call	the lang_decl and type_decl creators from the module
loading machinery.  This makes them reachable.

         gcc/cp/
         * cp-tree.h (maybe_add_lang_decl_raw, maybe_add_lang_type_raw):
         Declare.
         * lex.c (maybe_add_lang_decl_raw, maybe_add_lang_type_raw):
         Externalize, reformat.

pushing to trunk

-- 
Nathan Sidwell

[-- Attachment #2: 16.2-c++-infra-copy.diff --]
[-- Type: text/x-patch, Size: 1961 bytes --]

diff --git i/gcc/cp/cp-tree.h w/gcc/cp/cp-tree.h
index ae1147d4589..4eaa10bc7fd 100644
--- i/gcc/cp/cp-tree.h
+++ w/gcc/cp/cp-tree.h
@@ -6759,6 +6759,8 @@ extern tree unqualified_fn_lookup_error		(cp_expr);
 extern tree make_conv_op_name			(tree);
 extern tree build_lang_decl			(enum tree_code, tree, tree);
 extern tree build_lang_decl_loc			(location_t, enum tree_code, tree, tree);
+extern bool maybe_add_lang_decl_raw		(tree, bool decomp_p);
+extern bool maybe_add_lang_type_raw		(tree);
 extern void retrofit_lang_decl			(tree);
 extern void fit_decomposition_lang_decl		(tree, tree);
 extern tree copy_decl				(tree CXX_MEM_STAT_INFO);
diff --git i/gcc/cp/lex.c w/gcc/cp/lex.c
index 21e33d69c08..795f5718198 100644
--- i/gcc/cp/lex.c
+++ w/gcc/cp/lex.c
@@ -680,7 +680,7 @@ build_lang_decl_loc (location_t loc, enum tree_code code, tree name, tree type)
 /* Maybe add a raw lang_decl to T, a decl.  Return true if it needed
    one.  */
 
-static bool
+bool
 maybe_add_lang_decl_raw (tree t, bool decomp_p)
 {
   size_t size;
@@ -833,8 +833,7 @@ copy_lang_type (tree node)
   if (! TYPE_LANG_SPECIFIC (node))
     return;
 
-  struct lang_type *lt
-    = (struct lang_type *) ggc_internal_alloc (sizeof (struct lang_type));
+  auto *lt = (struct lang_type *) ggc_internal_alloc (sizeof (struct lang_type));
 
   memcpy (lt, TYPE_LANG_SPECIFIC (node), (sizeof (struct lang_type)));
   TYPE_LANG_SPECIFIC (node) = lt;
@@ -860,15 +859,15 @@ copy_type (tree type MEM_STAT_DECL)
 
 /* Add a raw lang_type to T, a type, should it need one.  */
 
-static bool
+bool
 maybe_add_lang_type_raw (tree t)
 {
   if (!RECORD_OR_UNION_CODE_P (TREE_CODE (t)))
     return false;
   
-  TYPE_LANG_SPECIFIC (t)
-    = (struct lang_type *) (ggc_internal_cleared_alloc
-			    (sizeof (struct lang_type)));
+  auto *lt = (struct lang_type *) (ggc_internal_cleared_alloc
+				   (sizeof (struct lang_type)));
+  TYPE_LANG_SPECIFIC (t) = lt;
 
   if (GATHER_STATISTICS)
     {